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Rheem Professional Classic Plus Series: Heavy Duty Power Direct Vent Use & Care Manual

1. 2 Connect the combustion air inlet system piping to the combustion air inlet piping tee using the 3 in 7 6 cm already installed rubber coupling and clamps See Figure 3 3 For vent and combustion air inlet terminals use the two 2 3 in 7 6 cm diameter Schedule 40 PVC 90 1 4 standard bend elbows supplied with the water heater This water heater may also be installed with 4 in 10 2 cm diameter pipe and fittings for the vent and combustion air inlet systems To connect the vent system piping e Install a straight length of 3 in 7 6 cm diameter pipe to the rubber coupling on the blower assembly e Followed by a 3 in 7 6 cm to 4 in 10 2 cm diameter pipe increaser fitting See Figure 4 To connect the combustion air inlet system piping e Install a straight length of 3 in 7 6 cm diameter pipe to the combustion air inlet piping tee coupling e Followed by a 3 in 7 6 cm to 4 in 10 2 cm diameter pipe increaser fitting See Figure 4 For vent and combustion air inlet terminals e Use 3 in 7 6 cm diameter Schedule 40 PVC 90 1 4 standard bend elbows not supplied DO NOT use unequal diameters of pipe and fittings for the vent and combustion air inlet systems except as defined previously NOTICE The difference between the vent and combustion air inlet system equivalent lengths must be no greater than 5 ft 1 5 m IMPORTANT Ensure that all the coupling clamps are tight befo
2. Air vent ee PA DO C TN 3 4 Shut Off Valve Gas Fired Water Heater heater 6 in 15 2 cm Air Gap qa 3 4 Tempered domestic hot water supply to house Drain valve not supplied with water heater Isolation valve in cold water return line from heating unit not supplied with water 3 4 Check Valve with 1 8 Hole if ve Shut Off Valve Typ 2 lt 3 4 cold water supply we enn a 2 soe Pressure Gauge ae ae J 3 4 Shut Off Valve Typ Heat Trap To 6 in 15 2 cm Min y 5 2 Gallon Thermal Expansion Tank if required not supplied with water heater 3 4 HWS amp HWR to Heating Coil Vacuum Relief Valve Not Supplied f required install per local code and valve manufacturer s instructions Wire to bronze pump l Air Handler Electronically controlled pump timer Activates every 6 hours for 60 seconds ot water to space heater lII Hot water coil All bronze pump chlek valve internal in pump Al bleed valve VI Water Sample Tap To HVAC Unit FAN ON OFF HEAT COOL 33 Lighting the Water Heater Before operating this water heater be sure to read and follow the instructions on the label pictured below and all other labels on the water heater as well as the warnings printed in this manual Failure to do so can result in unsafe operation of the water heater resulting in property damag
3. WARNING CAUTION or NOTICE These words mean A DANGER An imminently hazardous situation that will result in death or serious injury A WARNING A potentially hazardous situation that could result in death or serious injury and or damage to property A CAUTION A potentially hazardous situation that may result in minor moderate injury NOTICE Attention is called to observe a specified procedure or maintain a specific condition IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE USING Be sure to read and understand the entire Use and Care Manual before attempting to install or operate this water heater It may save you time and money Pay particular attention to the Safety Instructions Failure to follow these warnings could result in serious bodily injury or death Should you have problems understanding the instructions in this manual or have any questions STOP and get help from a qualified service technician or the local gas utility NOTICE This water heater is equipped with a flammable vapor sensor that will automatically shut down the water heater in the presence of gasoline vapors and some other flammable vapors If the flammable vapor sensor shuts down the water heater contact a qualified service technician Clear any hazardous materials and ventilate the area around the water heater Do not turn off the appliance or adjust the ON OFF switch in any way Do not tamper with the flammable vapor s
4. valve as close to the inlet of the appliance as practical at the time the appliance installation The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap Do not use excessive force over 31 5 ft lbs 42 7 Nem in tightening the pipe joint at the combination gas control inlet particularly if teflon pipe compound is used as the valve body may be damaged The inlet gas pressure to the water heater must not exceed 14 0 in w c 3 5 kPa w c for natu ral gas or 14 0 in w c 3 5 kPa w c for LP gas For purposes of input adjustment the mini mum inlet gas pressure with main burner on is shown on the water heater rating plate If high or low gas pressures are present contact your gas supplier for correction 2 Use a soapy water solution to test for leaks at all connections and fittings Bubbles indicate a gas leak that must be corrected The factory connections to the combination gas control should also be leak tested after the water heater is placed in operation AWARNING Failure to install a water heater suitable for the altitude at the location it is intended to serve can result in improper operation of the appliance resulting in property damage and or producing carbon monoxide gas which could result in personal injury or death ADANGER Failure to properly install the vent and combustion air inlet systems as outli
5. COOLER 9 HOTTER Temperature Setting Ad DANGER Hotter water increases the potential for Hot Water SCALDS Display VABC Burns on Adult Skin WARM approx 70 F 21 C 000o0o wrt plumbing authority for further information Y approx 120 F 49 C 50 00 More than 5 minutes A approx 130 F 54 C Oo00e0 o About 30 seconds B approx 140 F 60 C O0008e0O Less than 5 seconds 4 C approx 150 F 66 C oo0oo0oo0oo00 About 1 1 2 seconds C Flashing approx 160 F 71 C O0000 About 1 2 seconds ADANGER LIQUEFIED PETROLEUM LP PROPANE OR BUTANE AND NATURAL GAS MODELS LP and Natural gas have an odorant added to aid in detecting a gas leak Some people may not physically be able to smell or recognize this odorant If you are unsure or unfamiliar with the smell of LP or natural gas ask the gas supplier Other conditions such as odorant fade which causes the odorant to diminish in intensity can also hide or camouflage a gas leak Water heaters utilizing LP gas are different from natural gas models A natural gas water heater will not function safely on LP gas and vice versa No attempt should ever be made to convert the water heater from natural gas to LP gas To avoid possible equipment damage personal injury or fire do not connect the water heater to a fuel type not in accordance with the unit data plate LP for LP units Natural gas for natura
6. If the appliance will not operate follow the instructions TO TURN OFF GAS TO APPLIANCE and call your service technician or gas supplier PENR 000008 nn O ms Bi warns SSS TO TURN GAS OFF TO THE APPLIANCE 1 Set the thermostat to the lowest setting by first depressing the COOLER and HOTTER buttons at the same time and holding for 1 second Depress the COOLER button until only the WARM indicator light is lit 2 Toggle the ON OFF switch located on the blower assembly to the OFF position 3 Turn off all electrical power to the appliance 34 Operating the water heater ACAUTION Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time generally two weeks or more HYDROGEN GAS IS EXTREMELY FLAMMABLE To dissipate such gas and to reduce risk of injury it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system If hydrogen is present there will be an unusual sound such as air escaping through the pipe as the water begins to flow Do not smoke or use an open flame near the faucet at the time it is open Safety Precautions A Do turn off manual gas shut off valve if water heater has been subjected to over heating fire flood physi cal damage or if the gas supply fails to shut off Do Not turn on water heate
7. 5 1 cm diameter pipe is used e Then either 2 in x 3 in 5 1 cm x 7 6 cm pipe increasers e Or flush bushings must be installed to the vent and combustion air inlet connections of the terminal assembly e DO NOT use the concentric terminal assembly with 4 in 10 2 cm vent and combustion air inlet systems Disassemble the concentric terminal assembly e Note The concentric terminal assembly consists of an inner straight vent pipe an outer straight combustion air inlet pipe a Wye fitting and rain cap From inside the building insert the outer straight combustion air inlet pipe through the weather seal boot flashing so that the height from the roof to the rear of the rain cap when installed is as specified in the diagram NOTICE The concentric terminal assembly may be reduced in length as follows e Measure for desired installation length then cut the outer straight combustion air inlet pipe accordingly but not less than 12 in 30 cm e Measure and cut the straight inner vent pipe of the concentric terminal assembly so it is 13 in 5 1 cm longer in length than the outer straight combustion air inlet pipe e Ensure that there is no insulation or debris in the pipe Assemble the vent pipe assembly e Clean and cement the rain cap to the inner straight vent pipe From the outside slide the vent pipe with rain cap assembly through the combustion air inlet pipe until the rain cap if fully seated on the
8. Contact a qualified service technician Main burner does Energy shutoff device open The combination gas control thermostat should not stay lit be replaced by a qualified service technician Combustion shutoff device The combustion shutoff device should be inspect tripped ed by a qualified service technician ACAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation VERIFY PROPER OPERATION AFTER SERVICING CAUTION For your safety DO NOT attempt repair of gas piping combination gas control thermostat burners vent and or combustion air inlet systems or other safety devices Refer repairs to qualified service personnel Before You Call For Service Troubleshooting Tips Save time and money Review the charts on the following pages first and you may not need to call for service This water heater incorporates shut off devices that shut the operation of the water heater down if undesirable combustion conditions occur such as the presence of flammable vapors or blockage of the vent and or combustion air inlet systems Please contact a Qualified Service Technician if this occurs Problem Possible Causes What to Do Rumbling noise Scale and sediment Drain the water heater to remove scale and sediment from the tank Refer to page 38 Relief valve pro ducing popping noise or draining Not enough or no hot water Water is too hot Pressur
9. Ensure the T amp P Valve opening is not obstructed by the insulation 30 Typical Side Connect T amp P Arrangement Typical Top Connect T amp P Arrangement Heat Traps For increased energy efficiency some water heaters have been supplied with factory installed 3 4 in or 1 in NPT heat trap fittings in the hot outlet line and cold water inlet line These heat trap fittings may require a minimum of one 1 90 3 4 in or 1 in NPT elbow and may require an additional 90 3 4 in or 1 in NPT elbow or a 3 4 in or 1 in coupling depending on your model of water heater and installation needs See illustration of nipples and heat traps on page 43 Top Cap Installation For Certain Models Only Read these instructions thoroughly and make sure you understand all the steps and procedures before proceeding with the installation Carefully remove the Top Cap from the water heater carton Install the water heater as speci fied per this Use amp Care Manual Note Also see information as detailed in Water Supply Connec tions section Locate the small plactic bag containing the three 3 Dual Lock strips and two 2 sheet metal screws to be used to attach the Top Cap in the Use amp Care Manual bag Peel off one side of the Dual Lock strips and firmly press near the Top Cap mounting tabs and the inside center front of the rim on the Top Cap See diagram for detail Peel off the other side of the Dual Lock strips
10. Such liquids include gasoline LP gas butane or propane paint or adhesives thinners solvents and or combustible removers DO NOT obstruct or block the Flammable Vapor Sensor Because of natural air movement in a room or other enclosed space flammable vapors can be carried some distance from where liquids which give off flammable vapors are to be used or stored The open flame of the water heater s main burner can ignite these vapors creating a shut down condition which will not allow the water heater to ignite Rheem Water Heating FVIR certified gas water heaters can be installed on a residen tial garage floor without the use of an 18 in 46 cm stand in accordance with the National Fuel Gas Code ANSI Z223 1 NFPA 54 unless otherwise directed by State and Local code requirements The water heater must be located so it is not subject to physical damage for example by moving vehicles area flooding etc e We recommend this water heater be installed in locations where the ambient temperatures do not exceed 100 F 38 C IMPORTANT Do not install the water heater in a location where it may be subjected to ambient temperatures exceeding 125 F 52 C e The water heater should be installed so as to minimize the length of plastic vent and combustion air inlet pipe and the number of vent and combustion air inlet connection fittings required e See Vent and Combustion Air Inlet Section for vent system require
11. or flexible copper connectors are recommended on the hot and cold water connections so that the water heater may be easily disconnected for servicing if necessary The HOT and COLD water connections are clearly marked on the water heater Install a shutoff valve in the cold water line near the water heater Refer to the following illustration for suggested typical installation are released that will shorten the life of any gas burning appliance Propellants from common spray cans or gas leaks from A C and refrigeration equipment are highly corrosive after passing through a flame The water heater warranty is voided when fail ure of the heater is due to operation in a corro sive atmosphere piping This rapid pressure increase can quickly reach the safety setting of the relief valve caus ing it to operate during each heating cycle Thermal expansion and the resulting rapid and repeated expansion and contraction of compo nents in the water heater and piping system can cause premature failure of the relief valve and possibly the heater itself Replacing the relief valve will not correct the problem The suggested method of controlling thermal expansion is to install an expansion tank in the cold water line between the water heater and the check valve see illustration on page 9 The expansion tank is designed with an air cushion built in that compresses as the system pressure increases thereby relieving the over pressure co
12. 2 6 in 15 2 cm Max cm Max Spacing Spacing Figure 3 Table 2 From Sea Level through 2 000 ft 609 m Above Sea Level Min Allowed Vent amp Equivalent Vent amp Max Allowed Equivalent Combustion Combustion Air Inlet Vent amp Combustion Air Air Inlet System Lengths Each Pipe Inlet Lengths Each Pipe Diameter Vent and Combustion Air Inlet System Termination s 50 Gallon 65 000 amp 2 Concentric 47 000 Btu hr Models 65 Gallon 65 000 amp BE 75 Gallon 75 100 R Use only Rheem 3 in 7 6 cm concentric termination 16 Table 2 Continued From 2 000 ft 609 m Above Sea Level through 5 999 ft 1 828 m Above Sea Level Min Allowed Max Allowed Equivalent Equivalent Vents Vent amp Combustion Air Combustion Air Inlet Inlet Lengths Each Pipe Vent and Combustion Air Inlet a os Pipe Run System Termination s 47 000 Btu hr Models 65 Gallon 65 000 amp a 75 Gallon 75 100 amp ae Vent amp Combustion Air Inlet System Diameter From 6 000 ft 1 829 m Above Sea Level through 7 700 ft 2 347 m Above Sea Level Vent amp Mini Allowed Max Allowed Equivalent Combustion Ben praa A Vent amp Combustion Air Air Inlet System Inlet Lengths Each Pipe Vent and Combustion Air Inlet Diameter g a Pipe Run System Termination s 50 Gallon 65 000 amp 65 Gallon 65 000 amp g 75 Gallon 75 100 amp From 7 701 ft 2 347 m Above Sea Level through 10 200 f
13. Do not attempt to repair the unit It must be replaced OPERATING INSTRUCTIONS 1 2 3 0z Turn off all electrical power to the appliance This appliance is equipped with a Hot Stop Read the safety information above on this label Toggle the ON OFF switch located on the blower assembly to the ON position Set the thermostat to the lowest setting by pressing the COOLER Qand HOTTER buttons at the same time and holding them for 1 second Depress the COOLER button until only the WARM indicator light is lit Toggle the ON OFF switch located on the blower assembly to the OFF position Surface Ignition System which auto matically lights the burner Do NOT open the inner door of this appliance and try to light the burner by hand Wait five 5 minutes to clear out any gas If you smell gas STOP Follow B in the safety information above on this label If you do not smell gas go ahead to the next step 8 9 10 11 Turn onall electrical power to the appliance Toggle the ON OFF switch located on the blower assembly to the ON position Set thermostat to the desired temperature setting by pressing the COOLER Qand HOTTER buttons at the same time and holding them for 1 second Depress the HOTTER button until the desired temperature display setting is lit The preferred starting point for temperature setting is indicated by Jon the thermostat
14. Vent amp Combustion Air Inlet Lengths Each Pipe Run Max Allowed Equivalent Vent amp Combustion Air Inlet Lengths Each Pipe Max Allowed Equivalent Vent amp Combustion Air Inlet Lengths Each Pipe Vent and Combustion Air Inlet System Termination s Vent and Combustion Air Inlet System Termination s 90 Elbows 90 Elbows 90 Elbows Concentric Concentric Concentric From 7 701 ft 2 347 m Above Sea Level through 10 200 ft 3 109 m Above Sea Level Vent amp Combus tion Air Inlet System Diameter Min Allowed Equivalent Vent amp Combustion Air Inlet Lengths Each Pipe Run Max Allowed Equivalent Vent amp Combustion Air Inlet Lengths Each Pipe Run Vent and Combustion Air Inlet System Termination s mos re Mews ro men o o pepee p T ee es oo Use only Rheem 3 in 7 6 cm concentric termination 40 Gallon 40 000 amp 38 000 Btu hr Models 14 Maximum and Minimum Vent and Combustion Air Inlet Lengths For Power Direct Vent Models 50 Gallon With Inputs of 65 000 amp 47 000 Btu h 65 Gallon With Inputs of 65 000 amp 56 000 Btu h 75 Gallon With Inputs of 75 100 amp 70 000 Btu h Read these instructions thoroughly and make sure you understand all steps and procedures before proceeding with the installation 1 Connect the vent system piping to the blower assembly using the already installed 3 in 7 6 cm diameter rubber coupling and clamps
15. Vent and Combustion Air Inlet Terminal Installation Read these instructions thoroughly and make sure you understand all steps and procedures before proceeding with the installation Determine the locations for the vent and com bustion air inlet terminals then make two 2 holes through the exterior wall to accommodate the vent and combustion air inlet pipes t t 12 in 1 30 5cm Min lt lt gt Wind Vane Combustion Air Exhauist Vent Terminal z e Inlet Terminal inlet terminals e Maintain a minimum horizontal distance of 12 in 30 5 cm between the vent and com bustion air inlet terminal centerlines Insert lengths of vent and combustion air inlet pipes through the wall as shown Allow sufficient length of pipe to extend beyond the exterior wall of the building for attachment of the vent and combustion air Place the supplied 1 2 in 1 3 cm mesh metal screens inside each terminal fitting NOTICE For cold climates the screens may be removed Connect the terminals to the vent and combus tion air inlet pipes which are extending out of the building e Ensure that the back of the supplied termi nals are flush with the outside wall surface Complete the installation of the remainder of the vent system and attach it to the vent connec tor fitting on the water heater s blower assem bly Horizontal lengths of the vent system must slope downward a minimum of 1 8 in per foot 10
16. air inlet pipe through the wall so that the rear of the rain cap when in stalled sits flush with the outside wall NOTICE The concentric terminal assembly may be reduced in length as follows e Measure for desired installation length then cut the outer straight combustion air inlet pipe accordingly but not less than 12 in 30 cm e Measure and cut the straight inner vent pipe of the concentric terminal assembly so it is 13 in 5 1 cm longer in length than the outer straight combustion air inlet pipe e Ensure that there is no insulation or debris in the pipe Assemble the vent pipe assembly e Clean and cement the rain cap to the inner straight vent pipe e From the outside slide the vent pipe with rain cap assembly through the combustion air inlet pipe until the rear of the rain cap is flush with the outside wall e Clean and cement the rain cap to the com bustion air inlet pipe e Clean and cement a 3 in 7 6 cm diam eter SDR 35 PVC 90 1 4 standard bend elbow to the rain cap See below From the inside clean and cement the Wye fit ting to the vent and combustion air inlet pipes of the termination assembly Inside of Building Vent System 3 in 7 6 cm SN System 3 in 7 6 cm Optional Condensate Management Drain Port Horizontal Vent Concentric Terminal Installation Combustion Air Inlet Complete the installation of th
17. continuously by the electronic control in all modes of operation In the event that flammable vapors are detected the control will automatically shut down the water heater and prevent the water heater from being started again The following is a list of materials that will cause the Flammable Vapor Sensor to shut down the water heater Vapors of Gasoline Vapors of certain flammable paints stains and thinners Vapors of vent pipe Cement amp Solvents Bleach direct contact with flammable vapor sensor Some other flammable materials and their vapors If the flammable vapor sensor shuts down the water heater then the electronic control will dis play the appropriate error code and you should then promptly contact a qualified service techni cian Refer to the NOTICE on page 3 for additional information 37 38 Care and Cleaning of the Water Heater ADANGER Before manually operating the relief valve make certain no one will be exposed to the danger of the hot water released by the valve The water may be hot enough to create a scald hazard The water should be released into a suitable drain to prevent injury or property damage ADANGER Hotter water increases the potential for Hot Water Scalds ADANGER Failure to perform the recommended Routine Preventative Maintenance can harm the proper operation of this water heater which can cause carbon monoxide dangers excessive hot wate
18. for the vent and combustion air inlet systems To connect the vent system piping e Install a straight length of 2 in 5 1 cm diameter pipe to the rubber coupling on the blower assembly e Followed by a 2 in 5 1 cm to 3 in 7 6 cm diameter pipe increaser fitting See Figure 2 To connect the combustion air inlet system piping e Install a straight length of 2 in 5 1 cm diameter pipe to the combustion air inlet piping tee coupling e Followed by a 2 in 5 1 cm to 3 in 7 6 cm diameter pipe increaser fitting See Figure 2 For vent and combustion air inlet terminals e Use 3 in 7 6 cm diameter Schedule 40 PVC 90 1 4 standard bend elbows not supplied DO NOT use unequal diameters of pipe and fittings for the vent and combustion air inlet systems except as defined previously NOTICE The difference between the vent and combustion air inlet system equivalent lengths must be no greater than 5 ft 1 5 m Elbow Examples Short Bend 90 Elbow Do Not Use Combustion air inlet Figure 1 Min 2 1 2 in 6 4 cm to 6 in 15 2 cm Max Spacing IMPORTANT Ensure that all the coupling clamps are tightened before allowing the water heater to operate When using CPVC or ABS pipe and fittings use 90 elbows of the corresponding size and material for the vent terminal and combustion air inlet terminals The vent and combustion air inlet terminals of the water heater must be installe
19. from the house or building until the service call has been made the leak is corrected and a qualified agency has determined the area to be safe IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE USING Vth hS A WARNING For your safety the information in this manual must be followed to minimize the risk of fire or explosion electric shock or to prevent property damage personal injury or loss of life FOR INSTALLATIONS IN THE STATE OF CALIFORNIA California Law requires that residential water heaters must be braced anchored or strapped to resist falling or horizontal displacement due to earthquake motions For residential water heaters up to 52 gallon capacity a brochure with generic earthquake bracing instructions can be obtained from Office of the State Architect 1102 Q Street Suite 5100 Sacramento CA 95814 or you may call 916 445 8100 or ask a water heater dealer However applicable local codes shall govern installation For residential water heaters of a capacity greater than 52 gallons consult the local building jurisdiction for acceptable bracing procedures SAFETY PRECAUTIONS Have the installer show you the location of the gas shut off valve and how to shut it off if necessary Turn off the manual shut off valve if the water heater has been subjected to overheating fire flood physical damage or if the gas supply fails to shut off Read this manual entirely before installing DO NOT attempt to
20. in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or death A FOR YOUR SAFETY If you cannot reach your gas supplier call Do not store or use gasoline or other the fire department flammable vapors or liquids or other combustible materials in the vicinity of this or any other appliance To do so may result in an explosion or fire Improper installation adjustment alteration service or maintenance can cause property WHAT TO DO IF YOU SMELL GAS damage personal injury or death Refer to Do not try to light any appliance this manual Installation and service must be performed by a qualified installer service agency or the gas supplier Do not return to your home until authorized by the gas supplier or fire department Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions Printed in USA N AP14896 3 06 11 Safety Information Safety Precautions 3 6 RGasil Viocdel Sie eee 5 Installing the Water Heater Location e E ences 7 Water Supply Connections 8 GaS UP PN a 10 Vent and Combustion Air mlete ee ee ae ae a 11 27 Condensate Management 28 Wiring Diagram 29 Ripe insulation er ATE 30 Heatiraps a Sil Installation Checklist 32 Potable Space Heating 33 Operating Instruction
21. particularly at the joints between elbows or other fittings and the straight length of vent pipe Check the vent and combustion air inlet for signs of sagging or other stresses in the joints as a result of misalignment of any components in the systems If any of the conditions above are found they must be corrected in accordance with the instructions in this manual before com pleting the installation and putting the water heater into service Additional installation information for The Common wealth of Massachusetts is located on the back page of this manual Maximum and Minimum Vent and Combustion Air Inlet Lengths for Power Direct Vent Models 40 Gallon with Inputs of 40 000 amp 38 000 Btu h 50 Gallon with Input of 40 000 Btu h 12 Read these instructions thoroughly and make sure you understand all steps and procedures before proceeding with the installation 1 Connect the vent system piping to the blower assembly using the already installed 2 in 5 1 cm diameter rubber coupling and clamps Connect the combustion air inlet system piping to the combustion air inlet piping tee using the 2 in 5 1 cm already installed rubber coupling and clamps See Figure 1 For vent and combustion air inlet terminals use the two 2 2 in 5 1 cm diameter Schedule 40 PVC 90 1 4 standard bend elbows supplied with the water heater This water heater may also be installed with 3 in 7 6 cm diameter pipe and fittings
22. repair or replace or operating the water heater any part of your water heater unless it is specifically recommended in this manual All other servicing should be referred to a qualified technician Use this appliance only for its intended purpose as described in this Use and Care Manual Be sure your appliance is properly installed in accordance with local codes and the provided installation instructions READ AND FOLLOW THIS SAFETY INFORMATION va S CAREFULLY TEN SAVE THESE INSTRUCTIONS IMPORTANT Carefully inspect the water heater for damage before proceeding with the installation Of specific interest should be any dents in the long blue cover panel for the combustion air inlet PVC pipe or damages to the blower and the combustion air inlet PVC pipe assembly If you find damage DO NOT install or attempt any repair to the water heater Contact the manufacturer as detailed under IF YOU NEED SERVICE on page 44 Installing the Water Heater This water heater must be installed in accordance with these instructions local codes utility company requirements and or in the absence of local codes use the latest edition of the American National Standard National Fuel Gas Code A copy can be purchased from either the American Gas Association 400 N Capitol Street NW Washington DC 20001 as ANSI standard Z223 1 or National Fire Protection Association 1 Batterymarch Park Quincy MA 02269 as booklet NFPA 54 Vapor Sens
23. supply to the burner if the water heater exceeds normal operating temperatures Refer to the Before You Call For Service section of this manual or contact your dealer A WARNING Should overheating occur or the gas supply fail to shut off turn off the manual gas shutoff valve to the appliance If the water heater has been subjected to fire flood or physical damage turn off the manu al gas shutoff valve and do not operate the water heater again until is has been checked by a qualified service technician VACATION wA OAOT COOLER 9 HOTTER A warnine Water Temperature Time To Produce a Serious Burn 120 F 49 C More than 5 minutes 125 F 52 C 1 2 to 2 minutes 130 F 54 C About 30 seconds Temperature Setting Burns on Adult Skin 135 F 57 C About 10 seconds BC 140 F 60 C Less than 5 seconds WARM approx 70 F 21 C sooo oo A 145 F 63 C Less than 3 seconds Y approx 120 F 49 C ooeoo0oo0o More than 5 minutes 150 F 66 C About 1 2 seconds A approx 130 F 54 C oo0 e0c o About 30 seconds 155 F 68 C About 1 second B approx 140 F 60 C O000e O Less than 5 seconds Table courtesy of Shriners Burn Institute C approx 150 F 66 C COO000 About 1 1 2 seconds C Flashing approx 160 F 71 C OCO0000 About 1 2 seconds 36 Sequence of Operation During initial start up or a call for heat the con trol will verify
24. vented gas appliances as follows 1 Revise NFPA 54 section 10 5 4 2 by adding a second exception as fol lows Existing chimneys shall be permitted to have their use continued when a gas conversion burner is installed and shall be equipped with a manually reset device that will automatically shut off the gas to the burner in the event of a sustained back draft 2 Revise 10 8 3 by adding the following additional requirements a For all side wall horizontally vented gas fueled equipment installed in every dwelling building or structure used in whole or in part for residential purposes including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven 7 feet above finished grade in the area of the venting including but not limited to decks and porches the following requirements shall be satisfied 1 INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontal vented gas fueled equipment the installing plumber or gasfitter shall observe that a hard wired carbon monox ide detector with an alarm and battery back up is installed on the floor level where the gas equipment is to be installed In addition the installing plumber or gasfitter shall observe that a battery operated or hard wired carbon mon oxide detector with an alarm is installed on each additional level of the dwell ing building or structure served by the side wall horizontal vente
25. 10 ft to Max 0 to 3 m 3 m to Max Equivalent Vent System Equivalent Vent System Length Length CPVC or ABS PVC CPVC or ABS NOTICE This water heater may be installed in attics provided ambient temperatures do not exceed 125 F 52 C and CPVC or ABS pipe and fittings are used for the entire vent system NOTICE This unit is equipped with a Flammable Vapor Sensor Do not supply electrical power to the water heater until enough time has passed to allow the vapors from the primer and cement to dissipate The support method used should isolate the vent and combustion air inlet pipes from floor joists or other structural members to help prevent the transmission of noise and vibration Do not support pin or otherwise secure the vent and combustion air inlet systems in a way that restricts the normal thermal expansion and con traction of the chosen venting material If the water heater is being installed as a replacement for an existing power direct vent water heater a thorough inspection of the exist ing vent and combustion air inlet systems must be performed prior to any installation work 4 Verify that the correct materials as speci fied in this manual have been used and that the minimum or maximum vent and combustion air inlet lengths and terminal locations as detailed in this manual have been met Carefully inspect the entire vent and com bustion air inlet systems for any signs of cracks or fractures
26. ADANGER Households with small children disabled or elderly persons may require a 120 F 49 C or lower combination gas control thermostat setting to prevent contact with HOT water Maximum water temperatures occur just after the burner has shut off To find water temperature being delivered turn on a hot water faucet and place a thermometer in the water stream and read the thermometer See pages 35 and 36 for more details Water temperature over 125 F can cause severe burns instantly or death from scalds The temperature of the water in the heater can be regulated by pressing the COOLER or HOTTER arrow buttons on the front of the combination gas control To comply with safety regulations the combination gas control was set at its lowest setting before the water heater was shipped from the factory Children disabled and elderly are at highest risk of being scalded See instruction manual before The desired water temperature must be set setting temperature at water heater Feel water before bathing or showering Temperature limiting valves are available see manual Notice Mixing valves are available for reducing point of use water temperature by mixing hot and cold water in branch water lines Contact a licensed plumber or the local The illustration below details the approximate water temperature for each LED indicator of the combination gas control s display acaon Vase AOOOOO s
27. CONTACTEUR INFLAMMABLE PLANNE 45 atl BK SWITCH NC A DEPRESSION ka Gu 25 ae mi z ZO GAS VALVE SOUPAPE DE GAZ CONTROLE ELECTRONIQUE INTELLI VENT IF INTELLI VENT ELECTRONIC CONTROL Q i 5 WIRE HARNESS THAT RUNS FROM BLOWER ASSEMBLY TO WIPER CONTROL GAS VALVE 1 FAISCEAU DE CABLAGE ENTRE L ENSEMBLE DU 1 SOUFFLEUR ET LA INTELLI VENT DE LA SOUPAPE DE CONTR LE DU GAZ l s t yf es p EE E E E E ANY REPLACEMENT IGNITOR CABLE MUST BE RATED AT 250 C TOUT C BLE D ALLUMAGE DE REMPLACEMENT DOIT TRE TALONN 250 C BK BLACK NOIR BL BLUE BLEU G GREEN VERT R RED ROUGE W WHITE BLANC Y YELLOW JAUNE NOTE IF ANY OF THE ORIGINAL WIRE SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH A 18 GA 600 V 105 C WIRE 7 REMARQUE SI UNE PARTIE QUELCONQUE DU CABLAGE ORIGINAL N FOURNI AVEC L APPAREIL DOIT ETRE REMPLAC E ELLE DOIT ETRE REMPLACEE AVEC UN FIL DE CALIBRE 18 600 VCA 105 C 120V 50 60 Hz LESS THAN 5 AMPS ACAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation VERIFY PROPER OPERATION AFTER SERVICING 29 Installing the Water Heater Insulation Blankets Insulation blankets available to the general pub AWARNING If lic for external use on gas water heaters are not local codes require necessary The purpose of an insulation blanket external is to reduce the
28. OTICE Termination Restrictors supplied for use with 75 Gallon models ONLY Terminals with 1 2 in 1 3 cm Mesh Protective Screens and Termination Restrictors Inside Note Termination Restrictors used on 75 Gallon models ONLY Exhaust Vent Short Piece of Pipe Elbow Combustion Air Inlet See Condensate Management Section for Min 12 in additional information about optional piping 30 5 cm Above Roof or Anticipated Snow Level which ever is highest and Max 24 in 61 cm Above Roof Without Additional Support Optional Condensate Management Drain Port Terminals with 1 2 in 1 3 cm Mesh Protective Screens Inside Exhaust Vent Short Piece of Pipe f Combustion Air Inlet AID Exhaust Vent and or Combustion Air Inlet Pipe Through Roof Min 12 in 30 5 cm Above Roof or Anticipated Snow d Level which ever is highest and Max 24 in 61 cm Above Roof www ee ee Without Additional Support IMPORTANT The vent terminal must not terminate below the combustion air inlet terminal See Condensate Management Section for addi tional information about optional piping Slope 1 8 in per foot 10 mm per m towards the water heater Optional Condensate Man agement Drain Port Alternate Vent and or Combustion Air Inlet Pipe Through Roof 25 26 Installing the Water Heater Vertical Vent Alte
29. S l Should you have any questions about your new water heater or if it requires adjustment repair or rou tine maintenance it is suggested that you first contact your installer plumbing contractor or previously agreed upon service agency In the event the firm has moved or is unavailable refer to the telephone directory commercial listings or local utility for qualified service assistance Should your problem not be solved to your complete satisfaction you should then contact the Manufacturer s National Service Department at the following address 1241 Carwood Court Montgomery Alabama 36117 Phone 1 800 432 8373 When contacting the manufacturer the following information will be requested a Model and serial number of the water heater as shown on the rating plate attached to the jacket of the heater b Address where the water heater is located and physical location c Name and address of installer and any service agency who performed service on the water heater d Date of original installation and dates any service work was performed e Details of the problems as you can best describe them f List of people with dates who have been contacted regarding your problem Important Instructions for the Commonwealth of Massachusetts The Commonwealth of Massachusetts requires compliance with regula tion 5 08 Modifications to NFPA 54 Chapter 10 248 CMR 4 00 and 5 00 for installation of through the wall
30. Us amp are Mana li ae Savas a ile bonis With Installation Instructions for the Installer Residential Gas FVIR Certified PowerDutrect Vent Water Heaters Residential 40 50 65 amp 75 Gallon Models The purpose of this manual is twofold one to provide the installer with the basic directions and recommendations for the proper installation and adjustment of the water heater and two for the owner operator to explain the features operation safety precautions maintenance and troubleshooting of the water heater This manual also includes a parts list It is very important that all persons who are expected to install operate or adjust this water heater read the instructions carefully so they may understand how to perform these operations If you do not understand these instructions or any terms within it seek professional assistance Any questions regarding the operation maintenance service or warranty of this water heater should be directed to the seller from whom it was purchased If additional information is required refer to the section on If you need service Do not destroy this manual Please read carefully and keep in a safe place for future reference Recognize this symbol as an indication of Important Safety Information California Proposition 65 Warning This product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm A WARNING If the information
31. a gram on page 43 for location of blower assembly Water temperatures above 125 F 52 C can cause severe burns or death from scalding Be sure to read and follow the warnings outlined in this manual and on the label located on the water heater near the combination gas control thermostat Mixing valves are available for reducing point of use water temperature by mixing hot and cold water in branch water lines Contact a licensed plumber or the local plumbing authority for further informa tion The chart on the next page may be used as a guide in determining the appropriate water temperature for your home 35 Operating the Water Heater Water Temperature Setting Maximum water temperatures occur just after the burner has shut off To determine the water temperature turn on a hot water faucet and place a thermometer in the water stream To avoid any unintentional changes in water temperature settings the combination gas control thermostat has a tamper resistant feature for changing the temperature setting To change the temperature setting follow these instructions 1 Wake Up the temperature indicators by holding down both COOLER and HOTTER temperature adjustment buttons at the same time for one second see Figure below One or two of the temperature indicators will light up These indicators will only remain on for 30 seconds if no further buttons are pressed After 30 seconds the control will go b
32. ack to sleep mode 2 Release both of the temperature buttons a To decrease the temperature press and release the COOLER button until the desired setting is reached b To increase the temperature press and release the HOTTER button until the desired setting is reached NOTICE Holding down the button will not continue to lower or raise the temperature setting The button must be pressed and released for each temperature change desired A condition known as stacking or layering can occur when a series of short and frequent hot water draws are taken The hottest temperature water will be at the top of the tank closest to the outlet pipe delivering hot water to the home Time Temperature Relationship in Scalds Stacking can cause this top layer of water to be hotter than the water toward the bottom of the tank near the combination gas control thermostat Therefore always remember to test the water temperature with your hand before use and remember that hotter water increases the risk of scald injury Also always supervise young children or others who are incapacitated The combination gas control thermostat is constructed with a built in safety shutoff device designed to shut off the gas supply to the burner if the main burner is extinguished for any reason The combination gas control thermostat is also equipped with a single use gas shut off device that will shut off the gas
33. and main burner are operating properly Once filled with water it is only neces sary to plug the power cord in and make sure the ON OFF switch located on the blower assembly is in the ON position to put the water heater into operation Within seconds the hot surface ignitor should heat Water Temperature Setting The temperature of the water in the water heater can be regulated by pressing the buttons on the front of the combination gas control thermostat Safety and energy conservation are factors to be considered when selecting the water temperature setting of the water heater s combination gas control thermostat The lower the temperature setting the greater the savings in energy and operating costs To comply with safety regulations the combination gas control thermostat was set at its lowest setting before the water heater was shipped from the factory The recommended starting point temperature is 120 F 49 C up then the gas valve should open and the main burner ignite After the main burner ignites replace the outer door If no main burner flame is established the combina tion gas control will go through three trials for ignition before going into a lock out A warning light will alert the user of this lock out condition If this happens refer to Troubleshooting Guide TO SHUT OFF WATER HEATER Turn switch located on the side of the blower assembly to the OFF position See di
34. and place the Top Cap on the top front center of the water heater ensuring that it is aligned cor rectly and properly positioned on top of the water heater Press firmly to ensure proper attachment is made Align holes in mounting tabs on the Top Cap with the holes in the top of the heater then secure the Top Cap to the water heater with the two 2 8 sheet metal screws supplied IMPORTANT Do not over tighten the screws as this may damage the Top Cap Top Cap View 2 screws mounting tabs During Installation of this water heater DO J DO check inlet gas pressure to ensure that it is within the range specified on the rating plate J DO maintain proper clearances to combustibles as specified on the rating plate L DO allow enough time for joint cement vapors to dissipate BEFORE applying power to the water heater L DO ensure that the venting system complies with the guidelines found in the Use and Care Manual and National Fuel Gas Code J DO contact a qualified service technician if the main burner will not stay lit The burner chamber is designed to be sealed utilizing a gasket and tamper resistant screws Sight Glass Burner Access Door Gromme e Flammable Vapor Sensor DON T J DON T block or restrict the Flammable Vapor Sensor located around the lower portion of the water heater jacket J DON T remove the Burner Access Door unless absolutely necessary This shou
35. ap from vent pipe coupling drain port on the blower assembly _ AWARNING DANGER OF FIRE OR BODILY INJURY Solvent cements and primers are highly flammable Provide adequate ventilation and do not assemble near heat source or open flame Do not smoke Avoid skin or eye contact Observe all cautions and warnings on material containers ACAUTION For proper installation DO NOT use solvent cement that has become curdled lumpy or thickened DO NOT thin solvent cement Observe shelf precautions printed on the containers For applications below 32 F 0 C use only low temperature type solvent cement Appropriate solvent and cleaner must be used for the type of pipe used PVC CPVC or ABS 28 Cap S Cap f jm Cementing Joints All joints in the vent piping must be properly sealed and the following materials are recom mended PVC materials should use ASTM D2564 grade cement CPVC materials should use ASTM F493 grade cement ABS materials should use ASTM D2235 grade cement Cleaner Primer and Medium Body Solvent Cement 4 Cut pipe end square remove jagged edges and burrs Chamfer end of pipe then clean fitting socket and pipe joint area of all dirt grease or moisture 2 After checking pipe and socket for proper fit wipe socket and pipe with cleaner prim er Apply a liberal coat of prim
36. clear of the base of the water heater Flammable vapor sensor is not blocked L Water connections tight and free of leaks J Soap and water solution used to check all connec tions and fittings for possible gas leak 1 Gas Company inspected installation if required L Discharge line protected from freezing E Venting and Combustion Air Inlet Systems 1 Water Heater vented separately from all other appliances L Blower assembly properly installed L Proper materials and techniques used in the instal lation of the vent and combustion air inlet systems L Vent pipe properly secured to the exhaust connector of the blower assembly J Vent and combination air inlet systems supported at required intervals F Wiring J Correct power supply 120 VAC J Electrical connections tight 32 J Appropriate minimum clearances observed Precautions taken to prevent moisture damage around vent termination L Vapors from non metalic pipe cement and primer have dissipated prior to applying electrical power L Combustion Air Inlet pipe properly secured to the combustion air inlet piping tee Water Heater properly grounded and proper polar ity observed Supplemental Instructions for Gas Water Heaters Installed in Potable Water Space Heating Applications Local codes or plumbing authority requirements may vary from the instructions or diagrams provided in this manual and take precedent over these inst
37. d followed by the user Inspect the combustion air inlet and vent systems Make certain that all joints are secure and that combustion air inlet and vent pipe supports are all in place Check the outdoor combustion air inlet and vent terminals to see that they are free of obstructions and that there is no damage nearby caused by condensate Periodically lift and release the lever handle on the temperature pressure relief valve located near the top of the water heater to make certain the valve oper ates freely Allow several gallons to flush through the discharge line to an open drain NOTICE If the temperature and pres sure relief valve on the water heater discharges periodically this may be due to thermal expansion in a closed water system Contact the water sup plier or your plumbing contractor on how to correct this DO NOT plug the relief valve outlet A water heater s tank can act as a settling basin for solids suspended in the water It is therefore not uncommon for hard water deposits to accumulate in the bottom of the tank If allowed to accumulate these solids can cover the combination gas control thermostat sensors causing the sensors to operate erratically Because accumulated solids can prevent the com bination gas control thermostat sensors from accurately reading the water tem perature the water at the fixture can be hotter than the combination gas control thermostat setting It is suggeste
38. d gas fueled equipment It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors a In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic the hard wired carbon monoxide detec tor with alarm and battery back up may be installed on the next adjacent floor level b In the event that the requirements of this subdivision can not be met at the time of completion of installation the owner shall have a period of thirty 30 days to comply with the above requirements provided however that during said thirty 30 day period a battery operated carbon monoxide detector with an alarm shall be installed 2 APPROVED CARBON MONOXIDE DETECTORS Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI UL 2034 listed and IAS certified 3 SIGNAGE A metal or plastic identification plate shall be permanently 44 mounted to the exterior of the building at a minimum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizon tally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS 4 INSPECTION The state or local gas inspector of the side wall hor
39. d in the same atmospheric pressure zone The minimum and maximum equivalent lengths for the vent and combustion air inlet systems are shown in Table 1 e Maintain a minimum vertical height of 1 ft 30 5 cm of pipe including pipe increasers if used from the blower exhaust coupling before transitioning into any elbow e The vent and combustion air inlet terminations are not included in the equivalency calculations NOTICE A 90 1 4 standard bend or long bend elbow is equivalent to 5 ft 1 52 m of straight pipe A 45 1 8 standard bend or long bend elbow is equivalent to 2 5 ft 0 76 m of straight pipe DO NOT use short bend elbows Use only standard and or long bend elbows See examples below Standard Bend 90 Elbow Long Bend 90 Elbow OK to Use OK to Use Vent Combustion air inlet lt 3in 5 7 6 cm pipe diameter 5 1cem pipe diameter Figure 2 f Min 2 1 2 in 6 4 cm to 6 in 15 2 cm Max Spacing Installing the Water Heater Vent amp Combustion Air Inlet System Diameter 40 Gallon 40 000 amp 38 000 Btu hr Models 50 Gallon 40 000 Btu hr Models Combustion Air Inlet System Diameter 40 Gallon 40 000 amp 38 000 Btu hr Models 50 Gallon 40 000 Btu hr Models Table 1 From Sea Level through 5 999 ft 1 828 m Above Sea Level Min Allowed Equivalent Vent amp Combustion Air Inlet Lengths Each Pipe Run Min Allowed Equivalent
40. d that a few quarts of water be drained from the water heater s tank every month to clean the tank of these deposits Rapid closing of faucets or solenoid valves in automatic water using appli ances can cause a banging noise heard in a water pipe Strategically located risers in the water pipe system or water hammer arresting devices can be used to minimize the problem The anode rod should be removed from the water heater s tank periodically for inspection and replaced when more than 6 in 15 2 cm of core wire is exposed at either end of the rod Make sure the cold water supply is turned off before removing anode rod This water heater incorporates a combus tion shut off device that shuts the opera tion of the water heater down if undesir able combustion conditions occur such as the presence of flammable vapors or blockage of the combustion air inlet and or vent systems Please contact a quali fied service technician if this occurs ADANGER Combustible materials such as clothing cleaning materials or flammable liquids etc must not be placed against or next to the water heater Representative burner flame pattern NOTICE Refer to the Hydrogen Gas Caution in the Operating Instructions NOTICE Do not remove the anode rod from the water heater s tank except for inspection and or replacement as operation with the anode rod removed will greatly shorten the life of the glass lined tank and wi
41. e personal injury or death Should you have any problems reading or following the instructions in this manual STOP and get help from a qualified person A FOR YOUR SAFETY READ BEFORE OPERATING AWARNING If you do not follow these instructions and the Use amp Care Manual instructions exactly a fire or explosion may result causing property damage personal injury or loss of life This appliance does not have a pilot It is equipped with an ignition device which auto matically lights the burner Do NOT try to light the burner by hand BEFORE PUTTING THIS APPLIANCE INTO SERVICE Smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance e Do not touch any electric switch do not use any phone in your building e Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e If you cannot reach your gas supplier call the fire department Use only your hand to push in the gas control buttons Never use tools If the control buttons will not push in don t try to repair them call a qualified service technician Force or attempted repair may result in fire or explosion Do not use this appliance if any part has been under water Immediately call a qualified installer or service agency to replace a flooded water heater
42. e build up caused by thermal This is an unacceptable condition and must expansion in a closed system be corrected Contact the water supplier or plumbing contractor on how to correct this Do not plug the relief valve outlet capacity of the water heater abnormal demand pressure See the Water Temperature Setting of the thermostat may be set too low water heater section of this manual See the Water Temperature Setting of the thermostat is set too high water heater section of this manual Combination gas control thermostat Contact a qualified service technician is defective to replace the combination gas control thermostat CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation VERIFY PROPER OPERATION AFTER SERVICING CAUTION For your safety DO NOT attempt repair of gas piping combination gas control thermostat burners vent and or combustion air inlet systems or other safety devices Refer repairs to qualified service personnel 41 42 Gas Valve LED Codes LED Status VABC ooeood Problem An open earth ground circuit to the ignition system Solution Check that the earth ground connection is properly connected Check that the ground conductor on the water heater is properly connected V ABC Wiring error or a high resistance to Check proper connection of l
43. e remainder of the vent system and attach it to the vent connector fitting on the water heater s blower assembly IMPORTANT Raise all horizontal sections upwards a minimum of 1 8 in per foot 10 mm per m See below DO NOT use unequal diameters of pipe and fittings for the vent and combustion air inlet systems except as defined previously NOTICE The difference between the vent and combustion air inlet system equivalent lengths must be no greater than 5 ft 1 5 m Complete the installation of the remainder of the combustion air inlet system and attach it to the combustion air inlet connector fitting on the water heater s combustion air inlet tube assembly Support vertical and horizontal lengths of the vent and combustion air inlet systems as previ ously mentioned IMPORTANT Ensure that all the coupling clamps are tight before allowing the water heater to operate 2 ft x 2 ft 60 cm x 60 cm Sheet Metal Shield on Brick or Masonry Walls Rear of Rain Cap Flus with Outside of Wall Outside of Building Raise horizontal pipe upwards 1 8 in per foot 10 mm per m min See Condensate Management Section for additional information about optional piping 23 Installing the Water Heater Vertical Vent and Combustion Air Inlet Installation 24 The location of the vent and combustion air inlet terminals depends on the following minimum clear ances and considerations 1 Minimum 12 in 30 5 cm abo
44. e to do so can result in property damage bodily injury or death FIRE AND EXPLOSION HAZARD Can result in serious injury or death A Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance Storage of or use of gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance can result in serious injury or death IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE USING ADANGER WATER TEMPERATURE SETTING Safety and energy conservation are factors to be considered when selecting the water temperature setting of a water heater s combination gas control Water temperatures above 125 F 52 C can cause severe burns or death from scalding Be sure to read and follow the warnings outlined on the label pictured below This label is also located on the water heater Time Temperature Relationship in Scalds D A N G E R Water Temperature Time To Produce a Serious Burn D 120 F 49 C More than 5 minutes 125 F 52 C 1 2 to 2 minutes 130 F 54 C About 30 seconds 135 F 57 C About 10 seconds 140 F 60 C Less than 5 seconds 145 F 63 C Less than 3 seconds 150 F 66 C About 1 2 seconds 155 F 68 C About 1 second Table courtesy of Shriners Burn Institute The chart shown above may be used as a guide in determining the proper water temperature for your home
45. ed The water heater must be electrically grounded in accordance with local codes or in the absence of local codes in accordance with latest edition of the National Electric Code ANSI NFPA No 70 Refer to the figures below If local codes do not permit the use of cord i ae for water heater internal wiring connections a 120 V 50 60 Hz power supply with suitable disconnecting means must be connected to the black and white leads in the blower assembly CONNECTOR DIAGRAM n SCHEMATIC DIAGRAM SCH MA DES CONNEXIONS SCHEMA DE CABLAGE i ON OFF SWITCH lt 120 VAC sy CONTACTEUR 120 VAC PLUG FOR POWERVENT 1 MARCHE ARRET ON OFF BLOWER ASSEMBLY H SWITCH PRISE DE 120 VCA POUR G CONTACTEUR_ L ENSEMBLE DE N MARCHE ARRET SOUFFLEUR D EVENT MECHANIQUE CHANGEMENT DE TEMPERATURE BLOWER SOUFFLEUR Poona eee eee ene acetic deecon IGNITER TEMPERATURE VAC VAC ALLUMEUR I SWITCH NC SWNO SWNC_ 1 BLOWER CHANGEMENT DE CONTACTEUR A i SOUFFLEUR TEMP RATURE DEPRESSION i POWER g VENT BLOWER S 1 ASSEMBLY al ai FLAMMABLE VAPOR SENSOR 1 ENSEMBLE DU Q gt DETECTEUR DE VAPEUR INFLAMMABLE 1 SOUFFLEUR EJ FLAME SENSOR DO T _ SY 7 2 T CAPTEUR DE FLAMME 1 M CANIQUE 6 PIN CONNECTOR 1 yE l A OZ VAC VAC 1 CONNECTEUR 05 NG SHENG Scecescceoocess 4 6 BROCHES usy BL NO SWN FLAMMABLE IGNITER AND UOS VAPOR SENSOR FLAME SENSOR 22 EOJ gt Inc A pee eur DE ALLUMPUR ET gt g g 5 TEMPERATURE
46. ensor Do not submerse the flammable vapor sensor in water Do not allow the flammable vapor sensor to come into contact with any substances such as bleach or cleaners See the Gas Valve LED Code Section of this manual for a list of diagnostic codes ADANGER PROPERLY VENT THE WATER HEATER Failure to properly vent the water heater as outlined in the Vent and Combustion Air Inlet Section of the Installation Instructions in this manual can result in unsafe operation of the water heater To avoid the risk of fire explosion or asphyxiation from carbon monoxide never operate this water heater unless both the vent and combustion air inlet systems are properly installed Be sure to inspect both the vent and combustion air inlet for proper installation at initial start up and at least periodically thereafter Refer to the Care and Cleaning section of this manual for more information regarding vent and combustion air inlet system inspection A AWARNING Gasoline as well as other flammable materials and liquids which include but are not limited to adhesives solvents paint thinners etc and the vapors they produce are extremely dangerous DO NOT handle use or store gasoline or other flammable or combustible materials anywhere near or in the vicinity of a water heater or any other appliance Be sure to read and follow warning label pictured below and other labels on the water heater as well as the warnings printed in this manual Failur
47. er m Install the combustion air inlet system and attach it to the combustion air inlet connector fitting on the water heater s combustion air inlet tube assembly e Support vertical and horizontal lengths of the vent and combustion air inlet systems as previously mentioned Determine the vent and combustion air inlet terminal heights and cut the pipe accordingly e Insert lengths of vent and combustion air inlet pipes through the ceiling wall as shown e Install adequate flashing where the vent and combustion air inlet pipes pass through the roof e Connect a short piece of pipe approxi mately 3 in 7 6 cm to the terminals and elbows Place the supplied 1 2 in 1 3 cm mesh metal screens inside each terminal fitting then connect a short piece of pipe approximately 3 in 7 6 cm between the terminals and elbows NOTICE For cold climates the screens may be removed For 75 Gallon Power Direct Vent Models ONLY These water heater models are supplied with two 2 vent and combustion air inlet termina tion restrictors These restrictors help the water heater achieve peak efficiency when the water heater is installed using 3 in 7 6 cm diameter pipe at the minimum equivalent vent and com bustion air inlet lengths specified in Table 2 IMPORTANT Do not install the termination restrictors in equivalent vent and or combustion air inlet lengths longer than 8 ft 2 m or on any other Power Direct Vent model N
48. er to inside surface of socket and outside of pipe Do not allow primer to dry before applying cement restrict any portion of the drain tube The loop and all sections of the tube must not be restricted or collasped Fill the drain tube with water so that no combustion gases might vent into the room Wire or Zip Ties To Floor Drain e Route the drain tube to a floor drain or outside the building or refer to local codes for any condensation requirements 3 Apply a thin coat of cement evenly in the socket Quickly apply a heavy coat of cement to the pipe end and insert pipe into fitting with a slight twisting motion until it bottoms out NOTICE Cement must be fluid if not recoat 4 Hold the pipe fitting for 30 seconds to pre vent the tapered socket from pushing the pipe out of the fitting 5 Wipe all excess cement from the joint with a rag Allow 15 minutes before handling Cure time will vary according to fit temperature and humidity NOTICE Stir the solvent cement frequently while using Use a natural bristle brush or the dauber supplied with the can NOTICE This unit is equipped with a Flammable Vapor Sensor Do not apply power until enough time has passed to allow the vapors from the primer and cement to dissipate Wiring If local codes permit the water heater may be connected to electric service with the power cord provided DO NOT use an extension cord A grounding receptacle is requir
49. f the vent and combustion air intake systems PVC Schedule 40 DWV ASTM D2665 CPVC Schedule 40 ASTM F438 ABS Schedule 40 DWV ASTM D2661 DO NOT mix ABS pipe and fittings with PVC or CPVC pipe fittings Note It is acceptable to interchange PVC and CPVC pipe and fittings Vent and combustion air inlet systems must be adequately supported along both vertical and horizontal lengths The vent and combustion air inlet sys tems of this water heater may be installed horizontally through a wall or vertically through the roof Maximum unsupported length is recom mended to be no more than 4 feet 1 22 m It is imperative that the first hanger be located on the horizontal length immedi ately adjacent to the first 90 degree elbow from the vertical rise of vent pipe connect ed to the water heater 11 Installing the Water Heater Vent and Combustion Air Inlet continued 40 gallon 40 000 amp 38 000 Btu hr Models 50 Gallon 40 000 Btu hr Models 65 Gallon 65 000 amp 56 000 Btu hr Models 50 Gallon 65 000 amp 47 000 Btu hr Models 75 Gallon 75 100 amp 70 000 Btu hr Models 0 to 10 ft 0 to 3 m Equivalent Vent System Length 10 ft to Max 3 m to Max Length PVC CPVC or ABS CPVC or ABS Equivalent Vent System PVC CPVC or ABS Ambient Installation Temperatures and Vent System Material Specifications Up to 100 F 38 C 100 F 38 C to 125 F 52 C 0 to 10 ft
50. ge areas for liquid and powdered bleaches or swim ming pool chemicals often contain halogenated hydrocarbons An air supply containing halogenated hydro carbons may be safe to breathe but when it passes through a gas flame corrosive elements Thermal Expansion Determine if a check valve exists in the inlet water line Check with your local water utility company It may have been installed in the cold water line as a separate back flow preventer or it may be part of a pressure reducing valve water meter or water softener A check valve located in the cold water inlet line can cause what is referred to as a closed water system A cold water inlet line with no check valve or back flow prevention device is referred to as an open water system As water is heated it expands in volume and creates an increase in the pressure within the water system This action is referred to as ther mal expansion In an open water system expanding water which exceeds the capacity of the water heater flows back into the city main where the pressure is easily dissipated A closed water system however prevents the expanding water from flowing back into the main supply line and the result of thermal expansion can create a rapid and dangerous pressure increase in the water heater and system Water Supply Connections Refer to the following illustration for suggested typical installation The installation of unions
51. hould be of a type approved for hot water distribution The discharge line must be no smaller than the outlet of the valve and must pitch downward from the valve to allow complete drainage by gravity of the relief valve and discharge line The end of the discharge line should not be threaded or concealed and should be pro tected from freezing No valve of any type restriction or reducer coupling must be installed in the discharge line Installing the Water Heater AWARNING The tank must be full of water before the water heater is turned on The water heater warranty does not cover damage or failure resulting from operation with an empty or partially empty tank AWARNING Do not attempt to convert this water heater for use with a different type of gas other than the type shown on the rating plate Such conversion could result in hazardous operating conditions A WARNING Never use an open flame to test for gas leaks as property damage personal injury or death could result 10 To Fill the Water Heater Make certain that the drain valve is closed then open the shut off valve in the cold water supply line Open each hot water faucet slowly to allow the air to vent from the water heater and piping Condensation Condensation can also form on the tank when it is first filled with water Condensation might also occur with a heavy water draw and very cold inlet water temperatures Drops of water falling
52. ine neutral and hot e0c6 eoce o earth ground Wires Check that the water heater is securely connected to earth ground V ABC Pressure switch remained closed lon Verify that the wiring to the pressure switch es is ecedcocno er than 5 seconds after the call for correct eat began Replace the pressure switch es V ABC Pressure switch remained opened lon Verify that the wiring to the pressure switch es is eceocoe ger than 5 seconds after the combus correct tion blower was energized n Verify that the wiring to the pressure switch es is connected correctly Check the vent and or combustion air inlet systems for obstructions V ABC Error in the hot surface ignitor circuit Check that all wiring is correct and secure 000000 2 Replace hot surface ignitor V ABC System in lockout Gas supply is off or too low to operate Turn on the oo0e ee eo gas supply and or increase the inlet gas supply pres sure Hot surface ignitor not positioned correctly Low voltage to the water heater Increase supply volt age to rated voltage Electric polarity to unit is incorrect test and correct Check the vent and or combustion air inlet systems for obstructions V ABC Problem in the combination gas valve Turn power to the water heater off for 10 seconds and ecocoee driver circuit then back on 2 Replace the combination gas control thermostat V ABC Problem with the internal circuit Turn power t
53. ing or the combustion air inlet to any 9 in 23 cm for appliances gt 10 000 Btuh 3kW and lt other appliance 50 000 Btuh 15 KW 12 in 30 cm for appliances gt 50 000 Btuh 15 kW K Clearance to a mechanical air supply inlet driveway located on public property balcony 1 In accordance with the current ANSI Z223 1 NFPA 54 National Fuel Gas Code For clearances not specified in ANSI Z223 1 NFPA 54 the following statement shall be included Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer s installation instructions SSS Caulk Rising moisture will collect under eves If soffit vent is too close block off and install new vent at another location Caulk Inside corner 12 in 30 5 cm min above grade or anticipated snow level dae aN 1 22 m 6 ft 1 8 m Caulk zone or to edge of window etc starting within 6 fi 1 8 m Combustion Vent Air Inlet AWARNING Moisture in the flue gas will condense as it leaves the vent terminal In cold weather this condensate can freeze on the exterior wall under the eaves and on surrounding objects Some discoloration to the exterior of the building is to be expected However improper location or installation can
54. izon tally vented gas fueled equipment shall not approve the installation unless upon inspection the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5 08 2 a 1 through 4 b EXEMPTIONS The following equipment is exempt from 248 CMR 5 08 2 a 1 through 4 1 The equipment listed in Chapter 10 entitled Equipment Not Required To Be Vented in the most current edition of NFPA 54 as adopted by the Board and 2 Product Approved side wall horizontally vented gas fueled equipment in stalled in a room or structure separate from the dwelling building or structure used in whole or in part for residential purposes c MANUFACTURER REQUIREMENTS GAS EQUIPMENT VENTING SYSTEM PROVIDED When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with the equipment the instructions provided by the manufacturer for installation of the equipment and the venting system shall include 1 Detailed instructions for the installation of the venting system design or the venting system components and 2 A complete parts list for the venting system design or venting system d MANUFACTURER REQUIREMENTS GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED When the manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases but identifie
55. l gas units These units are not certified for any other fuel type LP appliances should not be installed below grade for example in a basement if such installation is prohibited by federal state and or local laws rules regulations or customs LP gas must be used with great caution It is heavier than air and will collect first in lower areas making it hard to detect at nose level Before attempting to light the water heater make sure to look and smell for gas leaks Use a soapy solution to check all gas fittings and connections Bubbling at a connection indicates a leak that must be corrected When smelling to detect a gas leak be sure to sniff near the floor also Gas detectors are recommended in LP amp natural gas applications and their installation should be in accordance with the detector manufacturer s recommendations and or local laws rules regulations or customs It is recommended that more than one method such as soapy solution gas detectors etc be used to detect leaks in gas applications DANGER If a gas leak is present or suspected Do not attempt to find the cause yourself Do not try to light any appliance Do not touch any electrical switch Do not use any phone in your building Leave the house immediately and make sure your family and pets leave also Leave the doors open for ventilation and contact the gas supplier a qualified service agency or the fire department Stay away
56. ld only be done by a qualified service technician A new burner access door gasket must be installed on any burner access door that has been removed J DON T install this water heater where standing water may occur The base of the water heater is meant to be mounted on a dry surface LJ DON T allow cleaners solvents or other mate rials to come into contact with the Flammable Vapor Sensor 1 DON T operate the water heater if the sight glass or burner access door grommet is damaged or broken 31 Installation Checklist A Water Heater Location LJ In a location where the vent and combustion air inlet systems will be within the requirements speci fied in this manual J Indoors and protected from freezing temperatures 1 Proper clearance from combustible surfaces observed and water heater not installed on carpeted floor J Air supply free of corrosive elements and flam mable vapors B Water Supply L Water heater completely filled with water J Air purged from water heater and piping C Gas Supply L Gas line equipped with shut off valve union and sediment trap L Approved pipe joint compound used D Relief Valve Temperature and Pressure Relief Valve properly installed and discharge line run to open drain L Provisions made to protect area from water dam age LJ Sufficient room to service the water heater 1 Combustible materials such as clothing cleaning materials rags etc
57. lent vent and combustion air inlet lengths of 8 ft 2 m IMPORTANT Do not install the termination restrictors in equivalent vent and or combustion air inlet lengths longer than 8 ft 2 m or on any other Power Direct Vent model NOTICE Termination Restrictors supplied for use with 75 Gallon models ONLY 2 ft x 2 ft 60 cm x 60 cm Sheet Metal Shield on Brick or i Masonry Walls Terminals with 1 2 in 1 3 cm Mesh Protective Screens Inside and Termination Restrictors Inside Note Termination Restrictors used on 75 Gallon models ONLY Rear of Termination Flush with Outside of Wall Outside of Building See Condensate Management Section for additional information about optional piping 2 ft x 2 ft 60 cm x 60 cm Sheet Metal Shield on Brick or Raise horizontal pipe upwards 1 8 in per foot 10 mm per m min Min 1 ft M ae Masonry Walls Raise horizontal pipe upwards 1 8 in per foot 10 mm per Rear of Termination Flush with Outside m min of Wall Inside of Outside of Building Building om Raise horizontal pipe upwards 1 8 in per foot 10 mm per m min Optional Condensate Management Drain Port See Condensate Management Section for additional information about optional piping Alternate Horizontal Vent and Combustion Air Inlet Terminal Installation Horizontal Vent and Combustion Air Inlet Alternate Vent Riser Terminal Installa
58. ll exclude warranty coverage Housekeeping Make sure the Flammable Vapor Sensor is not blocked or obstructed DO NOT expose the Flammable Vapor Sensor to water solvents or cleaning agents Combustion Air Inlet and Vent System Inspection Inspect the combustion air inlet and vent systems Make certain that all joints are secure and that combustion air inlet and vent system supports are all in place Check the outdoor combustion air inlet and vent system terminals to see that they are free of Burner Inspection Visually inspect the hot surface ignitor and main burner periodically Through the sight glass inspect the hot surface ignitor with the main burner off and inspect the main burner while firing If any unusual burner operation is noted the water heater should be shut off until qualified service assistance can be obtained obstructions and that there is no damage nearby caused by condensate ACAUTION For your safety cleaning of the burner must be performed only by qualified service personnel as it involves the disconnection of gas piping and leak testing The burner chamber is a sealed area If the burner access door is removed the burner access door gasket must be replaced For cleaning remove the burner from the water heater A vacuum cleaner can be used on the burner and floor shield inside the water heater The burner can also be cleaned by scrubbing with mild detergent Vacation and Extended Shu
59. m min above grade Exhaust Vent Terminal Horizontal Vent Alternate Concentric Terminal Installation 12 in 30 5 cm min k lle or anticipated snow level Combustion Exhaust in Combustion Clearance is equal Air Inlet Vent ni Air Inlet and parallel to wall 30 5 cm min Terminal Terminal Terminal Contact Manufacturer s National Service Department for Kit information see If You Need Service section 22 Read these instructions thoroughly and make sure you understand all steps and procedures before proceeding with the installation Determine the location for the concentric termi nal then make a 5 in 12 7 cm hole through the exterior wall Disassemble the concentric terminal assembly e Note The concentric terminal assembly consists of an inner straight vent pipe an outer straight combustion air inlet pipe a Wye fitting and rain cap The concentric terminal assembly is designed to accept 3 in 7 6 cm diameter pipe If 2 in 5 1 cm diameter pipe is used e Then either 2 in x 3 in 5 1 cm x 7 6 cm pipe increasers e Or flush bushings must be installed to the vent and combustion air inlet connections of the terminal assembly e DO NOT use the concentric terminal assembly with 4 in 10 2 cm vent and combustion air inlet systems From inside the building insert the outer straight combustion
60. mbustion is derived directly from the outside atmosphere and all flue gases are discharged to the outside atmosphere For proper installation of the vent and combus tion air inlet systems follow the instruc tions as detailed in this manual DO NOT connect this water heater to an existing vent or chimney it must be vented separately from all other appliances NOTICE This water heater is approved to use the following materials for pipe of the vent and combustion air inlet sys tems PVC Schedule 40 Cellular Core ASTM F891 PVC DWV ASTM D2665 or CSA B181 2 PVC Schedule 40 ASTM D1785 or CSA B137 3 PVC SDR Series ASTM D2241 or CSA B137 3 CPVC CPVC 4120 ASTM D2846 or CSA B137 6 CPVC Schedule 40 ASTM F441 or CSA B137 3 CPVC SDR Series ASTM F442 The water heater must be isolated from the gas supply piping system by closing its individual manual gas shutoff valve during any pressure testing of the gas supply at test pressures equal to or less than 1 2 psi 3 5 kPa configurations above 7 700 ft 2 347 m contact the water heater manufacturer for a required High Altitude Kit that will allow the specific water heater model to operate at altitudes between 7 700 ft 2 347 m and 10 200 ft 3 109 m See page 44 ABS Schedule 40 DWV ASTM D2661 or CSA B181 1 ABS Schedule 40 DWV Cellular Core ASTM F628 This water heater is approved to use the following materials for the fittings o
61. ments e Hot water lines should be insulated to conserve water and energy e Protect the water heater and water lines from exposure to freezing temperatures e DO NOT install this water heater out doors e Minimum clearances from combustible construction 0 in 12 in 0 cm 30 5 cm 5 in 0 in 12 7 cm 0 cm Front Clearance dimension is mea sured from the water heater jacket to the closet door x Top clearance dimension is mea sured from the jacket top of the water heater to the ceiling e If the water heater is to be installed directly on carpeting the water heater shall be installed on a metal or wood panel extending beyond the full width and depth of the water heater by at least 3 in 7 6 cm in all directions or if the water heater is to be installed in an alcove or closet the entire floor must be covered by a wood or metal panel 7 Installing the Water Heater NOTICE The water heater must not be installed near an air supply containing halogenated hydrocarbons IMPORTANT Do not apply heat to the HOT or COLD water connections If sweat connections are used sweat tubing to adapter before fitting adapter to the cold water connections on heater Any heat applied to the cold water supply fittings will permanently damage the dip tube and heat traps 8 Corrosive Atmospheres The air in beauty shops dry cleaning establish ments photo processing labs and stora
62. mm per m IMPORTANT When the vent system cannot be sloped away from the water heater or if the vent system has vertical section s then all hori 19 Installing the Water Heater 20 Horizontal Vent and Combustion Air Inlet Terminal Installation continued zontal sections must slope upwards a minimum of 1 8 in per foot 10 mm per m DO NOT use unequal diameters of pipe and fit tings for the vent and combustion air inlet systems except as defined previously NOTICE The difference between the vent and combustion air inlet system equivalent lengths must be no greater than 5 ft 1 5 m Complete the installation of the remainder of the combustion air inlet system and attach it to the combustion air inlet connector fitting on the water heater s combustion air inlet tube assembly Support vertical and horizontal lengths of the vent and combustion air inlet systems as previously mentioned Slope horizontal pipe downward 1 8 in per foot 10 mm per m min Optional Condensate Port Inside of Building Horizontal Vent and Combustion Air Inlet Terminal Installation Management Drain For 75 Gallon Power Direct Vent Models ONLY These water heater models are supplied with two 2 vent and combustion air inlet termination restrictors These restrictors help the water heater achieve peak efficiency when the water heater is installed using 3 in 7 6 cm diameter pipe at the minimum equiva
63. nal information about optional piping Complete the installation of the remainder of the combustion air inlet system and attach it to the combustion air inlet connector fitting on the water heater s combustion air inlet tube assembly Support vertical and horizontal lengths of the vent and combustion air inlet systems as previously mentioned IMPORTANT Ensure that all the coupling clamps are tight before allowing the water heater to operate A WARNING Do not operate the water heater with the rain cap and elbows removed or recirculation of combustion products may occur and or the vent and combustion air inlet systems could take in water causing damage to the water heater Failure to follow this warning could result in damage to the unit improper operation personal injury or death Vent 7 Combustion Air Inlet kh lt _ Min 12 in f 30 5 cm Above Roof or Anticipated Snow Level which ever is highest and Max 24 in 61 cm Above Roof Without Additional Support Slope 1 8 in per foot 10 mm per m towards the water heater Optional Condensate Management Drain Port Alternate Concentric Vent and or Combustion Air Inlet Pipe Through Roof 27 Installing the Water Heater Condensate Management Optional Piping There is no condensate collection and disposal required for Rheem water heaters under most conditions Installations where the vent system length i
64. ndition and eliminating the repeated operation of the relief valve Other methods of controlling thermal expansion are also available Contact your installing contractor water supplier or plumbing inspector for additional information regarding this subject IMPORTANT For models equipped with a Top Cap it is rec ommended that the hot and cold water piping have a minimum vertical height of 10 inches 25 4 cm from the top of the water heater before transitioning into any elbow This verti cal height is needed in order to provide adequate clearance for Top Cap installation and removal To gain access to the hot and cold water con nections on models equipped with a Top Cap remove the two 2 screws that secure the top cap to the water heater then pull the Top Cap upward and off the water heater See illustra tion of Top Cap and screws on pages 31 amp 43 25 4 cm 10 g Alternate installation detail for models equipped with a Top Cap NOTICE The National Fuel Gas Code NFGC mandates a manual gas shut off valve See NFGC for complete instructions Local codes or plumbing authority requirements may vary from the instructions or diagrams provided and take precedent over these instructions min Heat trap 6 in 15 2 cm minx Hot water outlet to cl fixtures 7 Water heater jacket Temperature and pressure relief valve Manual gas shut off valve T To gas supply Union Sediment tra
65. ned in the Vent and Combustion Air Inlet section of this manual will result in unsafe operation of the water heater causing bodily injury explosion fire or death To avoid the risk of fire explosion or asphyxiation from carbon monoxide NEVER operate the water heater unless it is properly vented and the vent and combustion air inlet systems are properly installed as detailed in the Vent and Combustion Air Inlet section of this manual The vent and combustion air inlet pipes must overlap a minimum of 1 2 in 1 3 cm at each joint It is important that the vent and combustion air inlet pipes engage fully into any pipe fitting and be kept in that position until the adhesive has fully cured DO NOT drill or punch holes in the plastic pipe or fittings Pressure Testing the Gas Supply System The water heater and its individual shut off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess 1 2 psi 3 5 kPa High Altitude Input rating of this water heater is based on sea level operation At higher elevations the actual input rate may be lower than the value listed on the rating label due to the derating of Natural Gas and LP Gas For Power Direct Vent models listed in the venting tables that do not show venting Vent and Combustion Air Inlet This water heater is a direct vent appli ance and must be installed so that all air for co
66. nician if this occurs Possible Causes What To Do Condensation This usually happens when a new This is normal after the water in the tank warms heater is filled for the first time up the condensation will disappear Refer to page 10 for more information Moisture from the products of com This is normal and will disappear in time Refer bustion condensing on the tank sur to page 10 for more information face An undersized water heater will cause Use a water heater size that meets the require condensation ments of your needs Yellow flame or Scale on top of the burner Contact a qualified service technician to remove soot scale Vent and or combustion air inlet sys Remove obstruction or debris from vent and or tems are blocked combustion air inlet systems Unable to light Air in gas line Contact a qualified service technician to purge the main burner the air from the gas line Blocked vent system Contact a qualified service technician to evaluate vent system for blockage Blocked combustion air inlet system Contact a qualified service technician to evaluate the combustion air inlet system for blockage Pressure switches Make sure the pressure switch hoses are not ems ae ee Wire connection s not fully secured Contact a qualified service technician to confirm wire connections Combustion shutoff device tripped Combustion Shutoff Device s should be inspect ed by a qualified service technician Gas control problem
67. o the water heater off for 10 seconds and oe eeo then back on 2 Replace the combination gas control thermostat V ABC Problem with the internal circuit Turn power to the water heater off for 10 seconds and 00000 then back on Replace the combination gas control thermostat V ABC Flame signal sensed out of 1 Replace the combination gas control thermostat 00O0 e O proper sequence V ABC ECO activated 1 Replace the combination gas control thermostat e0000 V ABC One of the temperature adjust 1 Press and release each of the buttons once o O O buttons stuck closed 2 Replace the combination gas control thermostat V ABC Water temperature sensor is either 1 Check that all wiring is correct and secure o 0 e open or short circuited 2 Replace the combination gas control thermostat V ABC Unit shuts down 1 Check for correct wiring to FV sensor 00000 2 Check for open circuits to FV sensor 3 Replace FV sensor V AB C Unit shuts down and in lockout 1 FV sensor detected presence of flammable vapors e0000 2 Contact a service agency CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation VERIFY PROPER OPERATION AFTER SERVICING CAUTION For your safety DO NOT attempt repair of gas piping combination gas control thermostat burners vent and or combustion air inlet systems or other safety devices Refer re
68. ol thermostat or pressure and temperature relief valve DO NOT apply insulation to the area where the Flammable Vapor Sensor is located This area must be unobstructed so as not to restrict air flow to the sensor Inspect the insulation blanket frequently mak ing certain it has not sagged and it is not restrict ing the air flow to the Flammable Vapor sensor located around the lower perimeter of the water heater jacket This could result in an unsafe operating condition Hot and Cold Pipe Insulation Installation Typical vertical piping arrangement For increased energy efficiency some water heaters have been supplied with two 24 in 61 cm long sections of pipe insulation T amp P Insulation Installation Typical horizontal piping arrangement Piping for Top Cap NOT shown Please install the insulation according to the illustrations above that best meets your requirements For increased energy efficiency this water heater has been supplied with a 2 3 8 section of T amp P insulation Please install the insulation as shown below Slip the insulation cover over the T amp P Valve through the center hole and align the hole in the side with the opening of the T amp P Valve e i Ensure the T amp P Valve opening is not obstructed 7 by the insulation Slip the insulation cover over the T amp P Valve through the center hole and align the hole in the side with the opening of the T amp P Valve
69. on the burner can produce a siz zling or pinging sound This condition is not Gas Supply The branch gas supply line to the water heater should be clean properly sized steel pipe or other approved gas piping material A union or ANSI design certified semi rigid or flexible gas appliance connector should be installed in the gas line close to the water heater The National Fuel Gas Code NFGC mandates a manual gas shutoff valve See NFGC for complete instructions If flexible connectors are used the maximum length shall not exceed 36 in 91 4 cm and must meet the requirements in ANSI Z21 24 CSA 6 10 Connectors for Gas Appliances Compound used on the threaded joints of the gas piping must be of the type resistant to the action of LP gas Use compound sparingly on male threads only Where a sediment trap is not incorporated as part of the appliance a sediment trap shall be installed downstream of the equipment shutoff Leak Testing The water heater and its gas connections must be leak tested at normal operating pressures before it is placed in operation 4 Turn on the manual gas shut off valve near the water heater A steady flow of water from all hot water faucet s indicates a full water heater Do not allow the flammable vapor sensor to become submerged in water unusual and will disappear after the water becomes heated However if condensation continues examine the piping and fittings for possible leaks
70. or 5 1 cm min The auxiliary catch pan installation MUST conform with local codes Notice DO NOT allow the catch pan to obstuct the flammable vapor sensor Notice DO NOT allow the flammable vapor sensor to become submerged in water Make sure the catch pan is properly drained A WARNING Combustible construction refers to adjacent walls and ceilings and should not be confused with combustible or flammable products and materials Combustible and or flammable products and materials should never be stored in the vicinity of this or any gas appliance Sa Diameter of water heater plus 2 in _ Location The water heater should not be located in an area where leakage from the tank or connections will result in damage to the area adjacent to the heater or to lower floors of the structure When such areas cannot be avoided it is recommended that a suitable catch pan adequately drained must be installed under the water heater The water heater must be centered in the catch pan Catch pan kits are available from the store where the water heater was purchased or any water heater distributor Make certain the floor underneath the water heater is strong enough to sufficient ly support the weight of the water heater once it is filled with water This gas fired water heater or any other appliance should not be installed in a space where liquids which give off flam mable vapors are to be used or stored
71. p Cap Combination gas control Jacket door Flammable vapor sensor Optional catch pan if required 4 Ny venting 1d s IANS Drain pan pipe to suitable drain 1 8 in per foot 10 mm per meter maximum slope down away from the water heater for horizontal Combustion air inlet connector Blower assembly Union Optional Heat trap 6 in 15 2 cm min Shut off SS a To cold water valve supply Shut off valve Thermal expansion tank if required Relief valve discharge line to suitable open Drain drain valve A new combination temperature and pressure relief valve complying with the Standard for Relief Valves and Automatic Gas Shut Off Devices for Hot Water Supply Systems ANSI 221 22 CSA 4 4 is factory installed and must remain in the opening provided and marked for the purpose on the water heater No valve of any type should be installed between the relief valve and the tank Local codes shall govern the installation of relief valves Relief Valve The pressure rating of the relief valve must not exceed 150 psi 1 034 kPa the maxi mum working pressure of the water heater as marked on the rating plate The Btuh rating of the relief valve must equal or exceed the Btuh input of the water heater as marked on its rating plate Position the outlet of the relief valve above a suitable open drain to eliminate potential water damage Piping used s
72. pairs to qualified service personnel Replacement Parts For 40 50 65 and 75 Gallon Models equipped for use with Natural or Liquified Petroleum LP gas Instructions For Placing a Parts Order All parts orders should include 4 The model and serial number of the water heater from the rating plate 2 Specify type of gas Natural or Liquified Petroleum LP gas as marked on the rat ing plate 3 Part description as noted below and number of parts desired 4 Refer to page 44 Combustion Air Inlet Rubber Coupling Coupling lower Assembly Top Cap certain models only Anode Rod Dip Tube Dip Tube Gasket Flue Baffle Combustion Coupling Flammable Vapor Sensor Burner Access Door Gasket Burner Orifice Igniter Burner Access Door Heat Trap Nipples ACAUTION For your safety DO NOT attempt repair of gas piping gas control thermostat burners vent connectors or other safety devices Refer repairs to qualified service personnel Use only original equipment replacement parts Burner Assembly Kit The kit provides extra speed clips and tamper resistant screws May differ in actual appearance Gas Control Thermostat Air Inlet Assembly not a replacment part Temperature and Pressure Relief Valve Drain Valve oe Combination r C amp e Combustion Air Inlet Jacket Door 43 Burner Access Door Grommet IF YOU NEED SERVICE E
73. pipe e Clean and cement the rain cap to the combustion air inlet pipe e Clean and cement a 3 in 7 6 cm diameter SDR 45 PVC 90 1 4 standard bend elbow to the rain cap e Clean and cement a short straight section of 3 in 7 6 cm diameter straight pipe to the 90 street elbow e Clean and cement a 3 in 7 6 cm diameter Schedule 40 PVC 90 1 4 standard bend elbow to the short straight section of pipe From the inside clean and cement the Wye fitting to the vent and combustion air inlet pipes of the termination assembly Complete the installation of the remainder of the vent system and attach it to the vent connector fitting on the water heater s blower assembly e Horizontal lengths of the vent system must slope towards the water heater a minimum of 1 8 in per foot 10 mm per m e DO NOT use unequal diameters of pipe and fittings for the vent and combustion air inlet systems except as defined previously NOTICE The difference between the vent and combustion air inlet system equivalent lengths must be no greater than 5 ft 1 5 m Elbow Min 12 in 30 5 cm Above Roof or Anticipated Snow Level which ever is highest and Max 24 in 61 cm Above Roof Without Additional Support Optional Condensate Management Drain Port l Pa M oA ll tide gol Concentric Vent and or Combustion Air Inlet Pipe Through Roof See Condensate Management Section for additio
74. r temperatures and other potentially hazardous conditions Draining the Water Heater ACAUTION Shut off gas to the water heater at the manual gas shut off valve before draining water ADANGER Before manually operating the temperature and pressure relief valve make certain no one will be exposed to the hot water released by the valve The water drained from the tank may be hot enough to present a scald hazard and should be directed to a suitable drain to prevent injury or damage Before turning off the cold water supply to the water heater open a hot water faucet allowing sufficient cold water into the tank to prevent the risk of a scald injury while draining the water heater Once the water in the tank is no longer hot turn off the cold water supply to the water heater Open a hot water faucet or lift the handle on the relief valve to admit air to the tank Attach a garden hose to the drain valve on the water heater and direct the stream of water to a drain Open the valve Routine Preventative Maintenance Properly maintained your water heater will provide years of dependable trouble free service It is recommended that a periodic inspec tion of the combination gas control thermostat burner relief valve internal flue way vent and combustion air inlet systems be made by service personnel qualified in gas appliance repair It is suggested that a routine preventative maintenance program be established an
75. r unless it is completely filled with water Do Not turn on water heater if cold water supply shut off valve is closed Do Not allow combustible materials such as newspa E Do Not store or use gasoline or other flammable vapors and liquids such as adhesives or paint thinner in vicinity of this or any other appliance If such flammables must be used open doors and windows for ventilation and all gas burning appliances in the vicinity should be shut off including their pilot burners to avoid vapors lighting NOTICE Flammable vapors can be drawn by air per rags or mops to accumulate near water heater A DANGER Hotter water increases the Potential for Hot Water SCALDS Households with small children disabled or elderly persons may require a 120 F 49 C or lower combination gas control thermostat setting to prevent contact with unsafe water temperatures currents from surrounding areas to the water heater fF Ifthere is any difficulty in understanding or following the Operating Instructions or the Care and Cleaning section it is recommended that a qualified person or serviceman perform the work Operating Procedure This water heater is equipped with a hot surface ignitor to light the main burner There is no pilot light to be lit but on initial start up it is recommended that the outer door be removed leave inner door in place for safety to view through the sight glass if the hot surface ignitor
76. re allowing the water heater to operate When using CPVC or ABS pipe and fittings use 90 elbows of the corresponding size and material for the vent terminal and combustion air inlet terminals The vent and combustion air inlet terminals of the water heater must be installed in the same atmospheric pressure zone The minimum and maximum equivalent lengths for the vent and combustion air inlet systems are shown in Table 2 e Maintain a minimum vertical height of 1 ft 30 5 cm of pipe including pipe increasers if used from the blower exhaust coupling before transitioning into any elbow e The vent and combustion air inlet terminations are not included in the equivalency calculations NOTICE A 90 1 4 standard bend or long bend elbow is equivalent to 5 ft 1 52 m of straight pipe A 45 1 8 standard bend or long bend elbow is equivalent to 2 5 ft 0 76 m of straight pipe DO NOT use short bend elbows Use only standard and or long bend elbows See examples below Elbow Examples Short Bend 90 Elbow Do Not Use Standard Bend 90 Elbow Long Bend 90 Elbow OK to Use OK to Use 15 Installing the Water Heater Combustion air inlet Combustion air inlet Vent _ __ lt 4in k m 10 2 cm pipe diameter 7 6 cm 3 pipe diameter 7 6 cm Min 2 1 2 in pipe diameter t Min 2 1 2 in 6 4 cm to 6 4 cm to 6 in 15
77. result in severe damage to the structure or exterior finish of the building Vent Terminal Location Considerations DO NOT install the vent terminal under any patio or deck To help prevent moisture from freezing on walls and under eaves do not locate the vent terminal on the side of a building with prevailing winter winds When terminating the vent and combustion air inlet pipes through brick or masonry surfaces the installation of a rust resistant sheet metal backing plates behind the vent and combustion air inlet terminals are recommended DO NOT locate the vent terminal too close to shrubbery as flue gasses may damage them Caulk all cracks seams and joints within 6 ft 1 83 m of the vent and combustion air inlet terminals Insulate vent pipe exposed to cold conditions attics crawl spaces etc with inflammable material to help prevent moisture from accumulating in the vent pipe Support horizontal sections of the vent and combustion air inlet pipe every 4 ft 1 22 m DO NOT rigidly secure the vent system Provisions must be made to allow for expansion and contraction of the vent system DO NOT install the vent and combustion air inlet terminals less than 1 ft 30 cm above grade or average snowfall whichever is greater Permanently seal annular openings around the vent and combustion air inlet system penetrations using approved materials to prevent entry of combustion products into the building Horizontal
78. rnate Concentric Terminal Installation Contact Manufacturer s National Service Department for Kit information see If You Need Service section NOTICE All pipe fittings solvent cement primers and procedures must conform to American National Standards Institute and American Society for Testing and Materials ANSI ASTM standards The location of the vent and combustion air inlet terminal depends on the following minimum clearances and consid erations 1 Minimum 12 in 30 5 cm above roof Minimum 12 in 30 5 cm above anticipated snow level 2 3 Maximum 24 in 61 cm above roof level without additional support for vent 4 Four 4 ft 1 22 m from any gable dormer or other roof structure with building interior access 1 e vent window etc Ten 10 ft 3 05 m from any forced air inlet to the building Any fresh or make up air inlet such as a dryer or furnace area is considered to be a forced air inlet Read these instructions thoroughly and make sure you understand all steps and procedures before proceeding with the installation Determine the location for the concentric terminal then make a 5 in 12 7 cm hole through the roof and interior ceiling s to accommodate the terminal vent and combustion air inlet system pipes and install a weather seal boot flashing not supplied for 4 1 2 in 12 4 cm PVC pipe The concentric terminal assembly is designed to accept 3 in 7 6 cm diameter pipe If 2 in
79. ructions Hot water t supply to house Hot water supply 0 From HOT mening outlet on unit water heater Tee fitting for vertical hot water supply lines Hot water Fr ee eee supply to Ww eaten water heater p 4 E Hot water supply to heating unit Tee fitting for horizontal hot water supply lines Combination Potable Water and Space Heating Application Tee fitting must be installed as shown This ensures that any air in the water lines will be purged through the domestic water faucets and showers DANGER When this system requires water for space heating at elevated temperatures above 125 F 52 C a mixing or tempering valve must be installed in the hot water supply line to the house in order to reduce the scald hazard potential ADANGER Any piping or components used in the installation of this water heater in a combination potable and space heating application must be suitable for use with drinking water ADANGER If this water heater is installed in an application intended to supply domestic hot water needs and hot water for space heating purposes do not connect the heater to an existing heating unit or components of a heating system that have previously been used with a non drinking water system Toxic chemicals such as those used for boiler treatment may be present and will contaminate the drinking water supply causing possible health risks Never introduce
80. s Lighting Instructions 34 Water Temperature 35 37 Care and Cleaning Vent System Inspection 39 Burner Inspection 39 Extended Shut Down 39 Troubleshooting Tips Before You Call FOR SNUG cn ocovcoee 40 41 LPD Codes ameter ee 42 Customer Service Pars S ee eee 43 i You Need Semice m er 44 FOR YOUR RECORDS Write the model and serial numbers here You can find them on a label on the appliance Staple sales slip or cancelled check here Proof of the original purchase date is needed to obtain service under the warranty READ THIS MANUAL Inside you will find many helpful hints on how to use and maintain your water heater properly A little preventive care on your part can save you time and money over the life of your water heater You ll find many answers to common problems in the Troubleshooting Guide If you review the chart of Troubleshooting Tips first you may not need to call for service READ THE SAFETY INFORMATION Your safety and the safety of others are very important There are many important safety messages in this manual and on your appliance Always read and obey all safety messages as an indication of Important Safety Information This symbol alerts you to potential hazards that can kill or hurt you and others This is the safety alert symbol Recognize this symbol All safety messages will follow the safety alert symbol and either the word DANGER
81. s special venting systems the fol lowing requirements shall be satisfied by the manufacturer 1 The referenced special venting system instructions shall be included with the appliance or equipment installation instructions and 2 The special venting systems shall be Product Approved by the Board and the instructions for that system shall include a parts list and detailed installation instructions e A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment all venting instructions all parts lists for venting instructions and or all venting design instructions shall remain with the appliance or equipment at the completion of the installation
82. s short or where it runs through conditioned space in the home such as basements or interior walls do not typically cause condensation and will not require any condensation disposal methods regardless of vent pipe slope The image on page 20 shows the recommended vent pipe slope of no less than 1 8 in per foot 10 mm per m away from the water heater Any condensation in the venting system will drain toward the vent termination The blower pipe coupling features a Connect 1 2 in I D flexible PVC or equivalent material clear tubing to the drain port Notice The tubing must be of sufficient length to reach a floor drain outside the building or other required condensate disposal termination requirements Refer to local codes Loop the drain tube so that it has a circular trap and secure the top and bottom of the loop with wire ties or plastic zip ties as shown DO NOT From Drain Port capped drain port which is not needed in this case A CAUTION Make sure the drain port cap is securely in place There are vent piping configurations when combined with certain environmental conditions that can produce enough condensate to require collection and disposal When a slope away from the water heater cannot be achieved and condensate handling is required in a horizontal vent system slope the vent pipe toward the water heater 1 8 in per foot 10 mm per m minimum and condensate management means as follows e Remove the c
83. standby heat loss encountered application of ith ikh Thi h insulation blanket with storage ta eaters 1S water eater meets or exceeds the National Appliance Energy kits the A manufacturer s Conservation Act standards with respect to insu instructions lation and standby loss requirements making an included with the insulation blanket unnecessary kit must be The manufacturer s warranty does not cover any damage or defect caused by installation attachment or use of any type of energy saving or other unapproved devices other than those authorized by the manufacturer into onto or in conjunction with the water heater The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property carefully followed The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized devices CAUTION If local codes require the application of an external insulation blanket to this water heater pay careful attention to the following so as not to restrict the proper function and operation of the water heater DO NOT cover the operating or warning labels attached to the water heater or attempt to relocate them on the exterior of insulation blanket DO NOT apply insulation to the top of the water heater This will interfere with the safe operation of the blower assembly DO NOT cover the burner access door jacket door gas contr
84. t 3 109 m Above Sea Level Vent amp n Allowea Max Allowed Equivalent Equivalent Vent amp 3 Combustion Combustion Airlnlet Vent amp Combustion Air Air Inlet System Inlet Lengths Each Pipe Vent and Combustion Air Inlet Diameter ae Pipe Run System Termination s 50 Gallon 65 000 amp ag 47 000 Btu hr Models os fe fm s ome Use only Rheem 3 in 7 6 cm concentric termination 17 Installing the Water Heater Direct Vent Terminal Clearances Vent Terminal Xx Air Supply Inlet Area Where Terminal Is Not Permitted US Installations A Clearance above grade veranda porch 1 ft 30 cm deck or balcony B Clearance to window or door that may be 6 in 15 cm for appliances lt 10 000 Btuh 3 kW opened 9 in 23 cm for appliances gt 10 000 Btuh 3kW and lt 50 000 Btuh 15 KW 12 in 30 cm for appliances gt 50 000 Btuh 15 kW C Clearance to permanately closed window D Vertical clearance to ventilated soffit lo cated above the terminal within a horizontal distance of 2 feet 61 cm from the center line of the terminal E Clearance to unventilated soffit F _ Clearance to outside comer G Clearance to inside corner H Clearance to each side of centerline extend ed above meter regulator assembly I Clearance to service regulator vent outlet J Clearance to nonmechanical air supply inlet 6 in 15 cm for appliances lt 10 000 Btuh 3 kW to build
85. t Down If the water heater is to remain idle for an extended period of time the power and water to the appliance should be turned off to conserve energy and prevent a build up of dangerous hydrogen gas The water heater and piping should be drained if they might be subjected to freez ing temperatures Anode Rod This water heater is equipped with an anode rod designed to prolong the life of the glass lined tank The anode rod is slow ly consumed thereby eliminating or mini mizing corrosion of the glass lined tank After a long shut down period the water heater s operation and controls should be checked by qualified service person nel Make certain the water heater is completely filled again before placing it in operation Water sometimes contains a high sulfate and or mineral content and together with cathodic protection process can produce a hydrogen sulfide or rotten egg odor in the heated water Chlorination of the water supply should minimize the problem 39 Before You Call for Service 40 Troubleshooting Tips Save time and money Review the charts on the following pages first and you may not need to call for service This water heater incorporates shut off devices that shuts the operation of the water heater down if undesirable combustion conditions occur such as the presence of flammable vapors or blockage of the vent and or combustion air inlet systems Please contact a Qualified Service Tech
86. the vacuum switch is open Once the control verifies the vent pressure switch is open the control will energize the blower motor for the pre purge sequence approximately 5 seconds The control will verify that the vent pressure switch has closed ensuring that the blower is functioning properly and that the venting system is not blocked The control will then proceed through a sequence of self diagnostics before initiating a trial for igni tion During the trial for ignition the hot surface ignit or will warm up Once the hot surface ignitor warms up the main gas valve will open allowing gas to flow to the main burner Once the main burner ignites the control will verify that the burner flame is present through the flame sense circuit The hot surface ignitor will then turn off The main burner will remain lit throughout the heat cycle until the water temperature setting is reached Once the water temperature setting is reached the control will close the main gas valve which will extinguish the main burner flames The blower motor will stay energized for an additional 5 seconds after the control verifies that the burner flame is extinguished in order to clear combustion gases from the water heater After the post purge sequence the control will de energize the blower motor and go into a stand by mode awaiting the next call for heat This water heater is equipped with a flammable vapor sensor that is monitored
87. tion 40 50 amp 65 Gallon Models ONLY Read these instructions thoroughly and make sure you understand all steps and procedures before proceeding with the installation Determine the locations for the vent and combustion air inlet terminals then make two 2 holes through the exterior wall to accommodate the vent and combustion air inlet pipes e Maintain a minimum horizational distance of 1 ft 30 5 cm between the vent and combustion air inlet terminal centerlines e Maintain a minimum distance from the vent and combustion air inlet terminals of not less than 1 ft 30 5 cm above grade or average snowfall whichever is greater Insert lengths of vent and combustion air inlet pipes through the wall as shown e Allow sufficient length of pipe to extend beyond the exterior wall of the building for attachment of the vent riser assemblies as shown Place the supplied 1 2 in 1 3 cm mesh metal screens inside each terminal fitting NOTICE For cold climates the screens may be removed Connect the vent riser assemblies to the vent and combustion air inlet pipes which are extending out of the building e Ensure that the back of the 90 elbows are flush with the outside wall surface and that the vent and combustion air inlet terminations of the vent risers are parallel with the outside wall IMPORTANT Remember to include the additional 90 elbows and vertical height of vent and combustion air inlet pipes of the
88. toxic chemicals such as those used for boiler treatment into this system Notice 50 ft 15 2 m maximum distance from water heater to fan coil developed length is required for Massachusetts State Typical Piping Diagram for Combination Potable Space Heating Installation Nominal 3 4 size mixing or tempering valve refer to warning above Follow mixing or tempering valve manufacturer s instructions for installation of the valve Spring loaded check valve in heating unit hot water supply line and cold water return line not supplied with water heater NOTE This check valve is incorporated in some heating units Refer to the installation instructions supplied with specific heating unit to determine if it is required Isolation valve in hot water supply line to heating unit not supplied with water heater See diagrams above for proper pipe application for vertical or horizontal supply lines Temperature and Pressure Relief Valve tie to location approved by local code Gas line to water heater gt Temperature and pressure relief valve discharge line Combination gas control Water heater drain pan installed in accordance with the Local and State Code Water heater to be in accordance with the Local and State Energy Code All water piping shall be insulated in accordance with Local and State Energy ode Flammable Vapor Sensor Minimum of 2 ft 61 cm developed length of 3 4 pipe
89. ve roof Minimum 12 in 30 5 cm above anticipated snow level 2 3 Maximum 24 in 61cm above roof level without additional support for vent 4 Four 4 ft 1 22 m from any gable dormer or other roof structure with building interior access i e vent window etc a Ten 10 ft 3 05m from any forced air inlet to the building Any fresh or make up air inlet such as a dryer or furnace area is considered to be a forced air inlet 6 Maintain a minimum horizontal distance of 12 in 30 5 cm between the vent and combus tion air inlet terminal centerlines 7 Maintain a minimum distance from the vent and the combustion air inlet terminals of not less than 12 in 30 5 cm above grade or average snowfall whichever is greater Read these instructions thoroughly and make sure you understand all steps and procedures before proceeding with the installation Determine the locations for the vent and com bustion air inlet terminals then make two 2 holes through the roof and interior ceiling s to accommodate the vent and combustion air inlet pipes e Maintain a minimum horizontal distance of 12 in 3 5 cm between the vent and combustion air inlet terminals Assemble the vent pipe assembly Install the vent system and attach it to the vent connector fitting on the water heater s blower assembly Horizontal lengths of the vent system must slope towards the water heater a minimum of 1 8 in per foot 10 mm p
90. vent riser when calculating the maximum equivalent vent and combustion air inlet system lengths The maximum equivalent vent and combustion air inlet system lengths must be as specified by Table 1 or 2 e The vent and combustion air inlet terminations are not included in the equivalency calculations 21 Installing the Water Heater Front View Option 1 Terminal assemblies to be parallel to wall Complete the installation of the remainder of the vent system and attach it to the vent connector fitting on the water heater s blower assembly e Horizontal sections of the vent system must slope downward toward the water heater a minimum of 1 8 in per foot 10 mm per m DO NOT use unequal diameters of pipe and fittings for the vent and combustion air inlet systems except as defined previously Front View Option 2 Short piece of pipe Terminal assemblies to be parallel to wall NOTICE The difference between the vent and combustion air inlet system equivalent lengths must be no greater than 5 ft 1 5 m Complete the installation of the remainder of the combustion air inlet system and attach it to the combustion air inlet connector fitting on the water heater s combustion air inlet tube assembly Support vertical and horizontal lengths of the vent and combustion air inlet systems as previously mentioned Side View att Termination Openings j 12 in 30 5 c

Rheem Professional Classic Plus Series: Heavy Duty Power Direct Vent Use & Care Manual

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Rheem Professional Classic Plus Series: Heavy Duty Power Direct Vent Use &amp; Care Manual

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Rheem Professional Classic Plus Series: Heavy Duty Power Direct Vent Use & Care Manual